There are some characterisitic features of landforms that you have to be able to recognise from OS map extracts. Below are some of the key feaures you need recognise:
Corries
Glacial Trough
U-shaped valleys are easy to find on an O.S. map (provided that you know the map extract is a glaciated upland). Look for the steep valley sides – indicated by the closeness of the contours. The valley sides should be roughly straight and parallel. The flat valley floor is easily identified – it usually has few contours and will look ‘white’. The valley floor may be occupied by a ribbon lake or a misfit stream.
There are some characterisitic features of landforms that you have to be able to recognise from OS map extracts. Below are some of the key feaures you need recognise:
Corries
Glacial Trough
U-shaped valleys are easy to find on an O.S. map (provided that you know the map extract is a glaciated upland).
Look for the steep valley sides – indicated by the closeness of the contours. The valley sides should be roughly straight and parallel.
The flat valley floor is easily identified – it usually has few contours and will look ‘white’. The valley floor may be occupied by a ribbon lake or a misfit stream.
Aretes
Pyramidal Peaks
Hanging Valley